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(No Model.) 2 Sheets-Sheet 1.

G. W. WEATHERHOGG. PETROLEUM 0E SIMILAR ENGINE.

No. 480,535. Patented Aug. 9, 1892.

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(No Model.) 2 sheets-sheet 2.

Gr. W. WEATHBRHOGG. PBTRDLEUM 0R SIMILAR ENGINE. No. 480,535. Patented Aug. 9, 1892.

UNITED STATES PATENT OFFICE.

GEORGE VILLIAM WEATHERHOGG, OF BIRMINGHAM, ENGLAND.

PETROLEUM OR SIMILAR ENGINE.

SPECIFICATION forming part of Letters Patent No. 480,535, dated August 9, 1892.

npplication led August 15. 1891. Serial No. 402,701. (No model.) Patented in England May 14, 1889, No. 8.013, and in Germany .Tune 1, 1890,1T0. 62,137.

of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to petroleum-engines; and it consists in the novel construction and combination of the parts hereinafter fully described and claimed.

In the drawings, Figure l is a longitudinal section through the engine; and Fig. 2 is an end view of the same, partly in section. Figs. 3 and 4 are details of the vapor and admission valves.

This engine works upon the three-cycle system, in which the strokes of the piston are employed repeatedly in the following manner: first, ignition of the combustible charge, which forces the piston outward; second, instroke of the piston, partially expelling the products of combustion; third, outstroke of the piston, taking in a cleansing charge of air; fourth, instroke of the piston, expelling the air-charge; fifth, outstroke of the piston, taking in the combustible charge; sixth, instroke of the piston, compressing the combustible charge.

A is the cylinder, and B is the combustionchamber proper, a portion of the combustion also taking place in the end ct of the cylinder.

The engine is provided with an exhaustvalve b, opening into the combustion-chamber B, and a valve b for admitting the cleansing charge of air.

The cylinder is secured to a box-shaped chamber E, provided with an air-inlet valve F, and e is a pipe which connects the said chamber E with the under side of the valve b. The cylinder receives its cleansing charge of air through the chamber E and discharges it down the exhaust-pipes N and the evaporator M into the atmosphere. The air in passing through the chamber E takes with it any vapor which may have escaped from the front end of the cylinder, and the chamber also prevents dust from getting into the cylinder.

I is a removable tank for the oil, slid into the'lower part of the engine-bed, and t' is an ordinary force-pump provided with suction and delivery valves of approved construction.v

gine-bed and is heated by the exhaust from the engine, which passes through it between the series of vertical tubes m, through which the oil passes. The upper and lower ends of the tubes are connected in a series by the hollow castings m', and additional heat may be applied to the evaporator when the engine is first started by applying a heatingiiame (not shown in the drawings) to the flat under side of the lower casting m. The hot vapor ascends fromthe evaporator through the pipe O and passes through the coil o, in which it is dried or superheated. The coil o is arranged in the heating-chamber O,'which also contains the igniting-tube 3, which is of approved construction and is heated by a flame (not shown in the drawings) in the ordinary manner. The vapor from the coil o passes through the stop-valve o into the annular space H above the vapor-valve H.

G is a chamber, in which the vapor is mixed with air before entering the cylinder. The air enters the chamber G through the automatic valve g and the vapor enters through the holes 4 in the seat of the valve H. A perforated casting 5 is secured in the chamber G under the valve H, as shown in Fig. 3, and serves to mix together the air and vapor very thoroughly. An admission-valve h for the mixed air and vapor is providedand is arranged between the mixing-chamber G and IOO the combustion-chamber B. This valve h is provided with perforated disks 6 on its stein for the mixed air and vapor to pass through when the valve is opened. These perforated disks break up any globules of unevaporated oil which may be carried along by the vapor. A perforated casting f is secured in the combustion-chamber below the admission-valve h and serves to evaporate any particles of oil still remaining inthe vapor. The casting f is heated by the combustion of the charge in the combustion-chamber and in turn heats the incoming charge of mixed air and vapor.

The ignition-tube is preferably provided with a valve l?, adapted to close the passage between the said tube and the combustionchamber at those times when the charge of air and the products of combustion are being expelled from the cylinder, the object being to prevent the ignition-tube from being cooled too much.

The vapor-valve II and the air and vapor admission valve h are operated by the pivoted bell-crank lever C, and the exhaust-valve b and the valve P are operated by similar bell-crank levers C. The free ends 0f the levers C C are operated by cams secured on the side shaft D in the ordinary manner, and the said side shaft is driven at one-third the speed of the crank-shaft in revolutions by appropriate intermediate driving-wheels, which are not shown in the drawings.

The pump i may be operated by hand by depressing the lever 7, which is pivoted in the bracket 8, and the said leveris also depressed by the engine at appropriate intervals in the following manner: A lever j' is pivoted on the rod J, carried by suitable supportingbrackets, and j is a rod which pivotally connects the said level-j with an extension on the end of the bell-crank lever C. A screw K is journaled in a lug on the lever j and works into a screw-threaded hole in the tappet 9, which slides back and forth on the said leverj over the lever 7. The tappet 9 is provided with a projection which strikes the lever 7 and thereby operates the pump-plunger. The amount of oil supplied to the engine is regulated by turning the screw K, and thereby increasing or diminishing the stroke of the pump, as required.

What I claim is- 1. In a petroleum-engine, the combination,

with the oil-pump provided with a spring for raising its plunger automatically, of a pivoted lever for depressing the pump-plunger, a reciprocating tappet connected with the driving mechanism of the engine and adapted to depress the said lever at appropriate intervals, and means, such as a screw, for moving the tappet longitudinally of the said lever, whereby the length of the stroke of the pumpplunger may be varied, substantially as set forth.

2. In a petroleum-engine, the combination,

with the oil-pump provided with a spring for raising its plunger automatically, of a pivoted lever for depressing the pump-plunger,asec ond pivoted lever provided with an adjustable tappet and arranged over the first said lever, and a rod connecting the second lever with the driving mechanism of the engine, substantially as and for the purpose set forth.

3. In a petroleum-engine, the combination, with the evaporator provided with an outer case adapted to receive exhaust-steam for vaporizing the oil, a series of pipes passing through the said case, and a hollow bottom casting connecting the lower ends of the said pipes and adapted to be heated by an external flame to vaporize suiicient oil to start the engine, of a pump for forcing the oil through the said tubes and casting, substantially as set forth.

4. In a petroleum-engine, the combination, with the automatic-air-inlet valve, of the vapor-valve provided with a perforated seat, the perforated casting in the mixing-chamber under the said vapor-valve, and the admissionvalve provided with perforated disks on it-s stem, whereby the air and vapor may be intermixed, substantially as set forth.

5. In a petroleum-engine, the combination, with the admission-valve provided with perforated disks on its stem for breaking up globules of oil, of the perforated casting secured in the combustion-chamber under` the said valve and adapted to evaporate the particles of oil, substantially as set forth.

In testimony whereof I affix my signature in presence of two witnesses.

GEORGE WILLIAM WEATHERHOGG.

Witnesses:

DUGALD CLERK, WILLIAM EVANS.

IOO 

